Regenerative gas-burner.



I F. BLUMBNSTEIN. REGENERATIVE GAS BURNER.

APPLICATION FILED DEG-17,1910,

1,035,274. Patented sept. 10,19'12.

FRANZ BLUMENSTEIN, AOF LONDON, ENGLAND.

Specification of Letters Patent.

Patented sept. 1o, 1912.

Application filed December 17, 19x10. Serial No. 597,771.

According to this invention the method1 of burning coal-gas or other combustible gas comprises heating the gas prior to its mixture with the air and utilizing the heat contained in that gas to heat conduits or chambers outside which the air supplied to the mixing chamber passes in order that-k the passing air may receive some of the heat from the gas within.

According to this invention, moreover, in a regenerative gas burner in which both the gas and the air are heated before being mixed, the gas is heated to a higher temperature than the air in order that the hot gas maybe utilized to impart heat to the air. R

The invention further consists in a regenerative gas burner for carrying out the method comprising the combination of a chamber arranged Ito be heated by the fiame of the burning gas and through whichl the gas supplied passes, a second chamber connected to the first chamber and from which the heated gas issues, and a. mixing chamber surrounding the second chamber and ex-` tending toward the first chamber.

In the accompanying drawings 2-Figure 1 is a sectional perspective view showing the invention embodied in a gas heating stove; Fig. 2 is a perspective view of a perforated ring ot refractory material hereinafter re- `t'erred to.

A, indicates the gas supply pipe which is connected to the top of a circular metal chamber B of lenticular cross-section.

C, C indicate two pipes, preferably of mild steel, screwed into the underneath side of the chamber B and extending downward and screwed into the top` D1 of a second chamber D. For convenience in assembling the parts the pipes are lin two parts joined together by unions C1. The lower chamber D has a number of projecting ribs D2, in the present inst-ance there are three, which gas burners and has for itsr fit easily into a mixing chamber E and rest on a projecting rib E1 near the bottom of the mixing chamber. Segmental spacesare thus `formed between the chamber vD andv the mixing chamber E for the passage of air. y Upon the upper end of the-mixing chamber E rests a ring E2 of L-shape cross section. To the ring E2 is secured, as by means of screws E3, a circular piece of wire gauze E4, preferably domed, and having holes through which the upper sections of he pipes C pass.

The top D1 of the lower chamber D is screwed into the chamber D and has in the center a small orifice D3 through which the gas issues into the mixing chamber E.

Above the chamber D is a baiie plate F' slightly domed or bnlged and having a number of perforation's, larger toward its periphery. There are no perforations, how- 4ever, at the center of the baille plate. In

order to maintain lthe baliie plate in the desired position, sleeves C2 are provided which surround the pipes C and rest on the top D1 of the chamber D. A The baiiie plate is supported by the sleeves C2 and is prevented from moving up along` the of a bowed piece of spring steel G. The

'. spring G y.is recessed at its ends to engage the pipes C and is held in position by reason of the force it exerts outward between i the two pipes C.

The mixing chamber E rests on a flange I-I1 extending inwardly from a vertical ex tension or ring H2 on a base H. The ring H2 is connected with the base I-I by a number of webs H3. To the underside of the base H. a batlie plate I is secured, as by means of serews'll screwed into the webs H.

A valve tor regulating the quantity oit air passing tothe mixing chamber E is arranged at the lower end of the chamber. The valve shown in Fig. 1 consists ot' a segmental dislt valve J capable ot being turned to cover or uncover openings J1 in the plate J2 secured, by means of projections J, to the webs H3. The disk valveJ is secured lo a. central screw J'4 passing through the pluie Jg'andprovided at its lower end with a handle J 5 by which the position of the valve may be adjusted. y

.Hugs H project upward from the base II pipes'C by means and a circular casing K tits around these lugs and is'secured thereto by means of screws K1. The casing K 1s perforated near its upper and lower ends as shown. l At the lio upper end of the casing K is secured a perforated top or grid K2. A number of projections K3, or a ledge, is secured near the upper end of the casing K andgif desired, a 5 perforated disk L of refractory material, lsuch as a mixtureof re-clay and asbestos, may be fitted in the stove between the chamber B and the grid K2, being supported by the projections K3. V The stove shown in Fig. l is provided with a removable cover or cap M which rests on the grid K2 and is held in position by a depending flange M1. The upper surface of the cap M is perforated in any design, it is shown in the figure in the form of a grid. A lifting ring M2 is provided in the top M.

The ring may be loose as shown or a fixed ring or knob may be employed.

, rIhe perforated ring N shown in Fig. 2 consists of fire-clay, metal, or any other highly refractory substance, and such a ring may be used, if desired, with the burner to give out more heat. The ring N would be placed between .the chamber B and the ring E2, 'resting on the latter.

The gas supplyr pipe A is fitted with a regulator O which may beadjusted so as to allow the right amount of gas to pass to the burner, that is, the quantity of gas `which will give the best result with the particular burner to which it is fitted.

The'regulator O may be fixed vin the gas supply pipe out of ordinary reach `so as not to be interfered with when once adjusted and the supply-of gas to the burner may be turneden or shut ofi` by means of an ordinary gas cock I.

The burner operates as follows The I regulated supply of gas, according to the 40 capacity of the burner, is admitted to the pipe A. The gas-fills the chamber B and passes down the pipes C into the lower chamber D. The gas issues through the orifice D3 and, impinging on the baflie plate F, becomes broken up and passes into the with the'air admitted at the bottom of the mixing chamber and passing by the chamber D. The mixture of gas and air leaves the mixing chamber E through the wire gauze E* and is ignited so as toburn with a ver light blue flame which plays on the un er side ofthe chamber B. After a shortl time, as lthe chamber B ismade of thin metal, it will become heated, reaching a temperature of fro-m HOO-.18000. The gas in the chamber B will therefore also be heated to a high temperature and, by passing down into the chamber D, which it does by way of the tubes C, it will transfer some of its heat to the chamber D. The air supplied to the mixing chamber.l will pass out side the heated chamber D and will thereby also become heated before it .mixes with the 85 heated gas issuing'from the orifice D8. The

result of this arrangement is that better combustion is set up at the top of the mixing chamber and no spontaneous combustion takes place in the mixing chamber itself.

The gas supplied may be arranged to enter the chamber B at the bottom mstead of at the top. Where it is desired to use the burner for lighting purposes, an incandescent mantle may be arranged in the known 'manner over the iiame and surrounding the chamber B.

'The bottom baffle plate I may, if desired,

be corrugated so as to provide openin s around its periphery where it engages tige base H to admit air to the mixin chamber. The baffie plate I prevents bac lighting due to floor drafts.

What I claim as my invention. and desire to secure by Letters Patent is z- 1. In a regenerative gas burner, the 'combination of a chamber arranged to be heated by the flame of the burning gas and through which the gas supply passes, a second chamber from which theheated gas issues, pipes connecting the first chamber with the Second chamber, and a mixing chamber surrounding the second chamber, and said pipes, and extending toward the first chamber, substantially as described.

2.v In a regenerative gas burner, the combination of a chamber arranged over the point of ignition, a gas supply pipe for the chamber, a second chamber from which the heated gas issues, pipes connecting the first chamber with the second chamber, a mixing chamber surrounding the second chamber and said pipes, and extending toward the first chamber, means for admitting air at the lower end of the mixing chamber so as topass said second chamber, and a baiiieplate arranged above the said second chamber for causing the mixing of the air with the heated gas issuing therefrom, substantially as described.

3. In a regenerative gas burner, the combination of chamber, means for sup lying gas to the chamber, a second cham er in" second chamber or ignition to heat the first chamber, means for regulating the admission of the air to the mixing chamber and a baffle plate arran ed in the mixin -c amber opposite the orifice of the secon chamber for causing the mixing of the air and the heated gas, substantially as described.

bination of a chamber, means for sup lying gas to the chamber, a second cham er 1n communication with the rst chamber and provided with an orifice for the escape of 125 4. In a regenerative gas burner, the com-' the gas, a mixing chamber surrounding the second chamber and having one end covered by wire gauze and carrying a perforated rin` in proximity to the first chamber, .anda ba' e piate arranged in the mixing cham ber op osite the orifice of' the second cham" ber, su stantiaily as described.

5. In a regenerative gas burner, the combination of a chamber, means for supplying gas to the chamber, a second chamber, conduits connecting the first chamber with the second chamber, the second chamber having an orifice for the escape of the gas, a mix-l ing chamber surroundin the second chamber and havingan en covered by Wire gauze and carrying a perforated ring 1n proximity to the first chamber, a plate at the other end of the mixing chamber provided with openings for admitting air, a disk valve for regulating the size of the openings in said late, and a bafe plate' a1'- ranged Within t e mixing chamber opposite the orifice of the second chamber and provided' With perforations near its periphery, substantially as described.

in testimony whereof I have signed my name to this specification in the presence of two subscribing Witnesses,

' FRANZ BLUMENSTEN. Witnesses:

HARRY S. BRIDGE, PERO? HEWITT. 

